block: User BdrvChild callback for device name
[qemu.git] / target-microblaze / cpu.h
1 /*
2 * MicroBlaze virtual CPU header
3 *
4 * Copyright (c) 2009 Edgar E. Iglesias
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 */
19 #ifndef CPU_MICROBLAZE_H
20 #define CPU_MICROBLAZE_H
21
22 #include "qemu-common.h"
23
24 #define TARGET_LONG_BITS 32
25
26 #define CPUArchState struct CPUMBState
27
28 #include "exec/cpu-defs.h"
29 #include "fpu/softfloat.h"
30 struct CPUMBState;
31 typedef struct CPUMBState CPUMBState;
32 #if !defined(CONFIG_USER_ONLY)
33 #include "mmu.h"
34 #endif
35
36 #define EXCP_MMU 1
37 #define EXCP_IRQ 2
38 #define EXCP_BREAK 3
39 #define EXCP_HW_BREAK 4
40 #define EXCP_HW_EXCP 5
41
42 /* MicroBlaze-specific interrupt pending bits. */
43 #define CPU_INTERRUPT_NMI CPU_INTERRUPT_TGT_EXT_3
44
45 /* Meanings of the MBCPU object's two inbound GPIO lines */
46 #define MB_CPU_IRQ 0
47 #define MB_CPU_FIR 1
48
49 /* Register aliases. R0 - R15 */
50 #define R_SP 1
51 #define SR_PC 0
52 #define SR_MSR 1
53 #define SR_EAR 3
54 #define SR_ESR 5
55 #define SR_FSR 7
56 #define SR_BTR 0xb
57 #define SR_EDR 0xd
58
59 /* MSR flags. */
60 #define MSR_BE (1<<0) /* 0x001 */
61 #define MSR_IE (1<<1) /* 0x002 */
62 #define MSR_C (1<<2) /* 0x004 */
63 #define MSR_BIP (1<<3) /* 0x008 */
64 #define MSR_FSL (1<<4) /* 0x010 */
65 #define MSR_ICE (1<<5) /* 0x020 */
66 #define MSR_DZ (1<<6) /* 0x040 */
67 #define MSR_DCE (1<<7) /* 0x080 */
68 #define MSR_EE (1<<8) /* 0x100 */
69 #define MSR_EIP (1<<9) /* 0x200 */
70 #define MSR_PVR (1<<10) /* 0x400 */
71 #define MSR_CC (1<<31)
72
73 /* Machine State Register (MSR) Fields */
74 #define MSR_UM (1<<11) /* User Mode */
75 #define MSR_UMS (1<<12) /* User Mode Save */
76 #define MSR_VM (1<<13) /* Virtual Mode */
77 #define MSR_VMS (1<<14) /* Virtual Mode Save */
78
79 #define MSR_KERNEL MSR_EE|MSR_VM
80 //#define MSR_USER MSR_KERNEL|MSR_UM|MSR_IE
81 #define MSR_KERNEL_VMS MSR_EE|MSR_VMS
82 //#define MSR_USER_VMS MSR_KERNEL_VMS|MSR_UMS|MSR_IE
83
84 /* Exception State Register (ESR) Fields */
85 #define ESR_DIZ (1<<11) /* Zone Protection */
86 #define ESR_S (1<<10) /* Store instruction */
87
88 #define ESR_ESS_FSL_OFFSET 5
89
90 #define ESR_EC_FSL 0
91 #define ESR_EC_UNALIGNED_DATA 1
92 #define ESR_EC_ILLEGAL_OP 2
93 #define ESR_EC_INSN_BUS 3
94 #define ESR_EC_DATA_BUS 4
95 #define ESR_EC_DIVZERO 5
96 #define ESR_EC_FPU 6
97 #define ESR_EC_PRIVINSN 7
98 #define ESR_EC_STACKPROT 7 /* Same as PRIVINSN. */
99 #define ESR_EC_DATA_STORAGE 8
100 #define ESR_EC_INSN_STORAGE 9
101 #define ESR_EC_DATA_TLB 10
102 #define ESR_EC_INSN_TLB 11
103 #define ESR_EC_MASK 31
104
105 /* Floating Point Status Register (FSR) Bits */
106 #define FSR_IO (1<<4) /* Invalid operation */
107 #define FSR_DZ (1<<3) /* Divide-by-zero */
108 #define FSR_OF (1<<2) /* Overflow */
109 #define FSR_UF (1<<1) /* Underflow */
110 #define FSR_DO (1<<0) /* Denormalized operand error */
111
112 /* Version reg. */
113 /* Basic PVR mask */
114 #define PVR0_PVR_FULL_MASK 0x80000000
115 #define PVR0_USE_BARREL_MASK 0x40000000
116 #define PVR0_USE_DIV_MASK 0x20000000
117 #define PVR0_USE_HW_MUL_MASK 0x10000000
118 #define PVR0_USE_FPU_MASK 0x08000000
119 #define PVR0_USE_EXC_MASK 0x04000000
120 #define PVR0_USE_ICACHE_MASK 0x02000000
121 #define PVR0_USE_DCACHE_MASK 0x01000000
122 #define PVR0_USE_MMU_MASK 0x00800000
123 #define PVR0_USE_BTC 0x00400000
124 #define PVR0_ENDI_MASK 0x00200000
125 #define PVR0_FAULT 0x00100000
126 #define PVR0_VERSION_MASK 0x0000FF00
127 #define PVR0_USER1_MASK 0x000000FF
128 #define PVR0_SPROT_MASK 0x00000001
129
130 /* User 2 PVR mask */
131 #define PVR1_USER2_MASK 0xFFFFFFFF
132
133 /* Configuration PVR masks */
134 #define PVR2_D_OPB_MASK 0x80000000
135 #define PVR2_D_LMB_MASK 0x40000000
136 #define PVR2_I_OPB_MASK 0x20000000
137 #define PVR2_I_LMB_MASK 0x10000000
138 #define PVR2_INTERRUPT_IS_EDGE_MASK 0x08000000
139 #define PVR2_EDGE_IS_POSITIVE_MASK 0x04000000
140 #define PVR2_D_PLB_MASK 0x02000000 /* new */
141 #define PVR2_I_PLB_MASK 0x01000000 /* new */
142 #define PVR2_INTERCONNECT 0x00800000 /* new */
143 #define PVR2_USE_EXTEND_FSL 0x00080000 /* new */
144 #define PVR2_USE_FSL_EXC 0x00040000 /* new */
145 #define PVR2_USE_MSR_INSTR 0x00020000
146 #define PVR2_USE_PCMP_INSTR 0x00010000
147 #define PVR2_AREA_OPTIMISED 0x00008000
148 #define PVR2_USE_BARREL_MASK 0x00004000
149 #define PVR2_USE_DIV_MASK 0x00002000
150 #define PVR2_USE_HW_MUL_MASK 0x00001000
151 #define PVR2_USE_FPU_MASK 0x00000800
152 #define PVR2_USE_MUL64_MASK 0x00000400
153 #define PVR2_USE_FPU2_MASK 0x00000200 /* new */
154 #define PVR2_USE_IPLBEXC 0x00000100
155 #define PVR2_USE_DPLBEXC 0x00000080
156 #define PVR2_OPCODE_0x0_ILL_MASK 0x00000040
157 #define PVR2_UNALIGNED_EXC_MASK 0x00000020
158 #define PVR2_ILL_OPCODE_EXC_MASK 0x00000010
159 #define PVR2_IOPB_BUS_EXC_MASK 0x00000008
160 #define PVR2_DOPB_BUS_EXC_MASK 0x00000004
161 #define PVR2_DIV_ZERO_EXC_MASK 0x00000002
162 #define PVR2_FPU_EXC_MASK 0x00000001
163
164 /* Debug and exception PVR masks */
165 #define PVR3_DEBUG_ENABLED_MASK 0x80000000
166 #define PVR3_NUMBER_OF_PC_BRK_MASK 0x1E000000
167 #define PVR3_NUMBER_OF_RD_ADDR_BRK_MASK 0x00380000
168 #define PVR3_NUMBER_OF_WR_ADDR_BRK_MASK 0x0000E000
169 #define PVR3_FSL_LINKS_MASK 0x00000380
170
171 /* ICache config PVR masks */
172 #define PVR4_USE_ICACHE_MASK 0x80000000
173 #define PVR4_ICACHE_ADDR_TAG_BITS_MASK 0x7C000000
174 #define PVR4_ICACHE_USE_FSL_MASK 0x02000000
175 #define PVR4_ICACHE_ALLOW_WR_MASK 0x01000000
176 #define PVR4_ICACHE_LINE_LEN_MASK 0x00E00000
177 #define PVR4_ICACHE_BYTE_SIZE_MASK 0x001F0000
178
179 /* DCache config PVR masks */
180 #define PVR5_USE_DCACHE_MASK 0x80000000
181 #define PVR5_DCACHE_ADDR_TAG_BITS_MASK 0x7C000000
182 #define PVR5_DCACHE_USE_FSL_MASK 0x02000000
183 #define PVR5_DCACHE_ALLOW_WR_MASK 0x01000000
184 #define PVR5_DCACHE_LINE_LEN_MASK 0x00E00000
185 #define PVR5_DCACHE_BYTE_SIZE_MASK 0x001F0000
186 #define PVR5_DCACHE_WRITEBACK_MASK 0x00004000
187
188 /* ICache base address PVR mask */
189 #define PVR6_ICACHE_BASEADDR_MASK 0xFFFFFFFF
190
191 /* ICache high address PVR mask */
192 #define PVR7_ICACHE_HIGHADDR_MASK 0xFFFFFFFF
193
194 /* DCache base address PVR mask */
195 #define PVR8_DCACHE_BASEADDR_MASK 0xFFFFFFFF
196
197 /* DCache high address PVR mask */
198 #define PVR9_DCACHE_HIGHADDR_MASK 0xFFFFFFFF
199
200 /* Target family PVR mask */
201 #define PVR10_TARGET_FAMILY_MASK 0xFF000000
202
203 /* MMU descrtiption */
204 #define PVR11_USE_MMU 0xC0000000
205 #define PVR11_MMU_ITLB_SIZE 0x38000000
206 #define PVR11_MMU_DTLB_SIZE 0x07000000
207 #define PVR11_MMU_TLB_ACCESS 0x00C00000
208 #define PVR11_MMU_ZONES 0x003E0000
209 /* MSR Reset value PVR mask */
210 #define PVR11_MSR_RESET_VALUE_MASK 0x000007FF
211
212 #define C_PVR_NONE 0
213 #define C_PVR_BASIC 1
214 #define C_PVR_FULL 2
215
216 /* CPU flags. */
217
218 /* Condition codes. */
219 #define CC_GE 5
220 #define CC_GT 4
221 #define CC_LE 3
222 #define CC_LT 2
223 #define CC_NE 1
224 #define CC_EQ 0
225
226 #define NB_MMU_MODES 3
227
228 #define STREAM_EXCEPTION (1 << 0)
229 #define STREAM_ATOMIC (1 << 1)
230 #define STREAM_TEST (1 << 2)
231 #define STREAM_CONTROL (1 << 3)
232 #define STREAM_NONBLOCK (1 << 4)
233
234 struct CPUMBState {
235 uint32_t debug;
236 uint32_t btaken;
237 uint32_t btarget;
238 uint32_t bimm;
239
240 uint32_t imm;
241 uint32_t regs[33];
242 uint32_t sregs[24];
243 float_status fp_status;
244 /* Stack protectors. Yes, it's a hw feature. */
245 uint32_t slr, shr;
246
247 /* lwx/swx reserved address */
248 #define RES_ADDR_NONE 0xffffffff /* Use 0xffffffff to indicate no reservation */
249 uint32_t res_addr;
250 uint32_t res_val;
251
252 /* Internal flags. */
253 #define IMM_FLAG 4
254 #define MSR_EE_FLAG (1 << 8)
255 #define DRTI_FLAG (1 << 16)
256 #define DRTE_FLAG (1 << 17)
257 #define DRTB_FLAG (1 << 18)
258 #define D_FLAG (1 << 19) /* Bit in ESR. */
259 /* TB dependent CPUMBState. */
260 #define IFLAGS_TB_MASK (D_FLAG | IMM_FLAG | DRTI_FLAG | DRTE_FLAG | DRTB_FLAG)
261 uint32_t iflags;
262
263 #if !defined(CONFIG_USER_ONLY)
264 /* Unified MMU. */
265 struct microblaze_mmu mmu;
266 #endif
267
268 CPU_COMMON
269
270 /* These fields are preserved on reset. */
271
272 struct {
273 uint32_t regs[16];
274 } pvr;
275 };
276
277 #include "cpu-qom.h"
278
279 void mb_tcg_init(void);
280 MicroBlazeCPU *cpu_mb_init(const char *cpu_model);
281 int cpu_mb_exec(CPUState *cpu);
282 /* you can call this signal handler from your SIGBUS and SIGSEGV
283 signal handlers to inform the virtual CPU of exceptions. non zero
284 is returned if the signal was handled by the virtual CPU. */
285 int cpu_mb_signal_handler(int host_signum, void *pinfo,
286 void *puc);
287
288 /* FIXME: MB uses variable pages down to 1K but linux only uses 4k. */
289 #define TARGET_PAGE_BITS 12
290
291 #define TARGET_PHYS_ADDR_SPACE_BITS 32
292 #define TARGET_VIRT_ADDR_SPACE_BITS 32
293
294 #define cpu_init(cpu_model) CPU(cpu_mb_init(cpu_model))
295
296 #define cpu_exec cpu_mb_exec
297 #define cpu_signal_handler cpu_mb_signal_handler
298
299 /* MMU modes definitions */
300 #define MMU_MODE0_SUFFIX _nommu
301 #define MMU_MODE1_SUFFIX _kernel
302 #define MMU_MODE2_SUFFIX _user
303 #define MMU_NOMMU_IDX 0
304 #define MMU_KERNEL_IDX 1
305 #define MMU_USER_IDX 2
306 /* See NB_MMU_MODES further up the file. */
307
308 static inline int cpu_mmu_index (CPUMBState *env, bool ifetch)
309 {
310 /* Are we in nommu mode?. */
311 if (!(env->sregs[SR_MSR] & MSR_VM))
312 return MMU_NOMMU_IDX;
313
314 if (env->sregs[SR_MSR] & MSR_UM)
315 return MMU_USER_IDX;
316 return MMU_KERNEL_IDX;
317 }
318
319 int mb_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
320 int mmu_idx);
321
322 #include "exec/cpu-all.h"
323
324 static inline void cpu_get_tb_cpu_state(CPUMBState *env, target_ulong *pc,
325 target_ulong *cs_base, uint32_t *flags)
326 {
327 *pc = env->sregs[SR_PC];
328 *cs_base = 0;
329 *flags = (env->iflags & IFLAGS_TB_MASK) |
330 (env->sregs[SR_MSR] & (MSR_UM | MSR_VM | MSR_EE));
331 }
332
333 #if !defined(CONFIG_USER_ONLY)
334 void mb_cpu_unassigned_access(CPUState *cpu, hwaddr addr,
335 bool is_write, bool is_exec, int is_asi,
336 unsigned size);
337 #endif
338
339 #include "exec/exec-all.h"
340
341 #endif